say "ðŸ’–".uniname; # SPARKLING HEART
say "ðŸ’–".ords;    # (128150)
say "ðŸ’–".codes;   # 1
say "\c[SPARKLING HEART]"; # ðŸ’–

my $b = Buf.new(240, 159, 146, 150);
say $b.decode('utf-8'); # ðŸ’–

say "\c[REPLACEMENT CHARACTER]"; # ï¿½